TY - BOOK AU - Villee,Claude Alvin AU - Dethier,V.G. TI - Biological principles and processes SN - 0721690289 AV - QH308.2QH308.2 .V55.V55 U1 - 574 PY - 1971/// CY - Philadelphia PB - Saunders KW - Biology N1 - Includes bibliographical references ER -